Speaker



FIG. 1 is a perspective view of a speaker showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof where the right side view is a mirror image; and,

FIG. 5 is a top plan view thereof where the bottom plan view is a mirror image.

The broken lines shown are included for the purpose of illustrating portions of the speaker that form no part of the claim. 

CLAIM The ornamental design for a speaker, as shown and described. 